Malicious PDF — malware analysis report

Static analysis result for SHA-256 97720a142e2ca2d2…

MALICIOUS

PDF

105.0 KB Created: 2021-07-15 13:38:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fd34047df843d4c4127f5e5561c1f0ee SHA-1: dcf23fac897f0e8ff10e0c6ecfe18ed71382b8bf SHA-256: 97720a142e2ca2d2fb22ca01649eb05d38965f60149d744a9326f892e69ceb57
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick the user into a financial scam by impersonating a lottery or parcel delivery notification. The embedded JavaScript likely facilitates the redirection to these malicious links, aiming to exploit the user financially.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9308

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://coretry.ru/uplcv?utm_term=definition+of+the+word+tenure
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a37132d2c4a---69224471251.pdf
    • http://cyklo-sport-servis.cz/UserFiles/File/nurali.pdf
    • http://dspec-car.com/js/upload/files/57205247226.pdf
    • http://aptatravel.com/clients/4/48/489dad2d2d8436d4c085fc0ccdc2d1b3/File/41714510703.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/ce63129d00ab34ff452ffb08c6e556a7/puvix.pdf
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/5999d72d49caa9adbf7cc2d54587391f/40015386026.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bf3a0e797---60793794003.pdf
    • http://titadoorbinhduong.com/upload/files/fevesotabimo.pdf
    • http://emirates-offshore.com/uploads/image/file/90044062506.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1e391a258db253acd5db417ab20b6adf/lanavuval.pdf
    • http://dermaktif.com/imgup/file/48082760137.pdf
    • https://nothingbutsafetyglasses.com/userfiles/file/46645195734.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/p3n6c528jpb2a91ag2i70fmhnm/92274637346.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3a66b782a---remog.pdf
    • https://lienlacanien.com/img_pages/file/93312516186.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608a92799e67b---8705803435.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9a82ec4cd---6086768191.pdf
    • https://ipic.vn/userfiles/file/57549356806.pdf
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/5885a428b1bf34cdb1f59ef2260dad6b/tiluvasa.pdf
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/2q009pg8u6i9jjrneeo1g59s9o/412177103.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607582b1bfba5---suvoxorujunidalenefa.pdf
    • http://ebslang.net/_UploadFile/Images/file/fadagipumofubuwujib.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160783dfbbab47---dagadu.pdf
    • http://pahsclassof2005.com/clients/d/d6/d61c4c031b0f3af13d3e88110ef3a3e1/File/23847566485.pdf
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609be5cfa12c1---pofuwu.pdf
    • https://edu-mate.kr/_UploadFile/Images/file/7904548590.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010214.bin
3e1268a2ddd8d65a9e2634c38bc0ccc89ab5131ac9342a01d1f5dcba6d89269b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10214 24828 bytes
font_01_sfnt_off00013ef2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF2 16792 bytes
font_02_sfnt_off00015709.bin
7798037ad84c31ac433c676da06a02cd4869fe28507c1ee3700cc75ca554b187		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15709 10264 bytes
font_03_sfnt_off00016e10.bin
c44951a1add2bc7583178660776a61e24d8ab46f750d4ef6c6003781aaca324e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E10 3532 bytes
font_04_sfnt_off00017bbd.bin
ac0cb1390641a7ddeb78d9c8ae221847f6862741043691f288e5bd13d5a0a0aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BBD 16736 bytes

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